Patents Examined by Rashad H Johnson
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Patent number: 11437897Abstract: An electric machine includes a plurality of planar laminations stacked to form an electrical steel rotor having openings defining magnet pockets and adjacent inner side pockets. The adjacent inner side pockets define a center bridge therebetween and have blasted surface portions such that compressive stress layers are induced along edges of the center bridge to strengthen the center bridge.Type: GrantFiled: December 23, 2020Date of Patent: September 6, 2022Assignee: Ford Global Technologies, LLCInventors: Leyi Zhu, Edward Chan-Jiun Jih, Feng Liang, Michael W. Degner
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Patent number: 11433525Abstract: In one aspect of the present disclosure, an electric working machine includes an integrally-molded member, a first conductor, and a second conductor. The integrally-molded member includes a surface and contains an insulation material. The first conductor is integrally provided to the surface of the integrally-molded member and supplies a first current. The second conductor is integrally provided to the integrally-molded member and supplies a second current. A portion of the second conductor is embedded into the integrally-molded member.Type: GrantFiled: September 18, 2019Date of Patent: September 6, 2022Assignee: MAKITA CORPORATIONInventor: Akira Niwa
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Patent number: 11437898Abstract: A brushless direct current motor including a rotor, a first stator disposed adjacent the rotor, and a second stator disposed adjacent the rotor. The first stator is configured to selectively cause a rotational movement of the rotor during normal operation of the motor, and the second stator is configured to selectively maintain a stationary position of the rotor against a force exerted by an external source.Type: GrantFiled: July 31, 2018Date of Patent: September 6, 2022Assignee: Dana Automotive Systems Group, LLCInventor: Johannes N. van Ginkel
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Patent number: 11427085Abstract: A long stator power supply section and a long stator linear motor for a maglev train, comprising a plurality of stator core modules (1) and stator coils (2) equal in number to the stator core modules (1). Each stator of the plurality of stator coils (2) is correspondingly embedded into one stator core module of the stator core modules (1) respectively; joints are arranged at both ends of each stator coil (2); the stator coils (2) on every two adjacent stator core modules (1) are detachably connected by means of the joints; and the joints of the stator coils (2) on the stator core modules (1) at both ends are connected to a feeder cable.Type: GrantFiled: October 10, 2017Date of Patent: August 30, 2022Assignee: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Gaohua Chen, Jianghua Feng, Benyu Xin, Rongjun Ding, Kuisen Tian, Shuying Guo
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Patent number: 11431210Abstract: A lamination for use in an electric machine stator includes a body having a generally circular outer periphery and a generally circular inner periphery, spaced from the outer periphery and a plurality of spaced apart teeth extending inwardly from the circular inner periphery. Each of said teeth define opposed inner edges thereof. The lamination includes a first pair of tips extending tangentially in opposed directions from the inner edge of one of said teeth and a second pair of tips extending tangentially in opposed directions from the inner edges of another one of said teeth. A tip of the first pair of tips and a tip of the second pair of tips define a first configuration having a first gap therebetween and defining a second configuration having a second gap therebetween. The first gap being substantially less than the second gap.Type: GrantFiled: August 2, 2018Date of Patent: August 30, 2022Assignee: REGAL BELOIT AMERICA, INC.Inventors: Alan Jacob Manz, Kamron Mark Wright, John Sheldon Wagley, Lester Benjamin Manz
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Patent number: 11431208Abstract: An electrical device includes an electromagnetic component configured to generate a magnetic flux. The electromagnetic component includes a soft magnetically-conductive material configured to pass magnetic flux therethrough along a flux path. The soft magnetically-conductive material includes at least one grain oriented portion having metal grains that are oriented parallel with respect to the magnetic flux.Type: GrantFiled: March 16, 2020Date of Patent: August 30, 2022Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Jagadeesh Tangudu, Beata I. Wawrzyniak, John A. Sharon, James T. Beals, Tahany Ibrahim El-Wardany, Wayde R. Schmidt
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Patent number: 11424653Abstract: This present utility model provides a novel DC dynamo which is characterized by making the magnetic lines of flux pass through an air gap between the rotator and the stator in the same direction, thus the most of armature coils can always receive the electromotive force of the same polarity in the same direction. Therefore, bidirectional energy conversion between the mechanical energy and the electrical energy of the armature coils in series can still proceed in the absence of commutators and induced the armature to generate sufficient electromotive force to conveniently regulate suitable terminal voltages and the ratios of the rotating speed and the moving speed thereof.Type: GrantFiled: December 9, 2019Date of Patent: August 23, 2022Inventor: Chun-Jong Chang
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Patent number: 11418097Abstract: An external winding controlled two-degree-of-freedom bearing-free switched reluctance motor includes a stator and a rotor. An edge portion of the rotor includes rotor teeth. The stator includes an external winding and a stator core. The stator core includes four suspension teeth distributed in x and y directions on the same circumference of the radial outer side of the rotor and magnetism isolating bodies connected to two adjacent suspension teeth, each suspension tooth includes, along the axial direction of the rotor, a permanent magnet sheet and magnetically conductive sheets symmetrically connected to two sides of the permanent magnet sheet, torque teeth are connected to the inner walls of the magnetism isolating bodies, and torque windings are wound around the torque teeth. The external winding includes x-direction control cores connecting two suspension teeth in the x direction to form two x-direction symmetrical closed paths.Type: GrantFiled: June 14, 2019Date of Patent: August 16, 2022Assignee: HUAIYIN INSTITUTE OF TECHNOLOGYInventors: Tao Zhang, Lihong Mo, Qing Lu, Weihong Ding, Zhongyi Tang, Yeqing Wang, Xing Xia
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Patent number: 11418082Abstract: A stator used for a motor and having excellent vibration resistance, waterproofness, and an insulating property. The stator used for a motor includes a stator core having a plurality of teeth arranged at substantially equal intervals on a same circumference, and an insulator covering the teeth, and coil portions are formed by wires being winded around portions of the insulator that covers the plurality of teeth. The insulator includes first wall portions provided on the center axis side with respect to the coil portion, and molded portions formed, by resin, on the center axis side with respect to the first wall portions. Wire extended portions of the wire pulled out from the coil portion straddle the first wall portions. Wire terminal end portions are connected to bus rings. The bus rings are embedded in the molded portions.Type: GrantFiled: September 17, 2020Date of Patent: August 16, 2022Assignee: TOYO DENSO KABUSHIKI KAISHAInventor: Naoaki Shimizu
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Patent number: 11411472Abstract: An unmanned aerial vehicle (UAV) includes a UAV body, and a stabilizing platform mounted on the UAV body and configured to stabilize a payload device. The stabilizing platform includes a frame assembly adapted to hold the payload device and a brushless motor coupled to the frame assembly. The brushless motor is configured to directly drive the frame assembly in response to one or more motor signals to allow the payload device to rotate around at least one of a pitch axis, a roll axis, or a yaw axis of the payload device. A brushless motor includes a rotor housing; a stator disposed within the rotor housing; and a linear Hall effect sensor. A posture of the payload device is controlled by adjusting a rotational angle of the brushless motor, and the rotational angle of the brushless motor is determined using the linear Hall effect sensor.Type: GrantFiled: January 15, 2021Date of Patent: August 9, 2022Assignee: SZ DJI OSMO TECHNOLOGY CO., LTD.Inventor: Zihan Chen
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Patent number: 11401971Abstract: A position sensor includes a plurality of E-shaped ferromagnetic cores arranged to define a circular opening therethrough to receive a shaft. Each E-shaped ferromagnetic core has a plurality of teeth, wherein adjacent E-shaped ferromagnetic cores of the arranged plurality of E-shaped ferromagnetic cores have an overlapping tooth. The position sensor further includes a frame surrounding the arranged plurality of E-shaped ferromagnetic cores, with the E-shaped ferromagnetic cores coupled to the frame.Type: GrantFiled: August 26, 2019Date of Patent: August 2, 2022Assignee: Ingersoll-Rand Industrial U.S., Inc.Inventors: Lauri Juhani Salmia, Petri J Mäki-Ontto, Esa H. M. Vikman
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Patent number: 11404950Abstract: A retarder-equipped rotating electrical machine includes a rotor, a stator, and a retarder rotor. The stator has teeth at regular intervals in a circumferential direction. One ends of the teeth are disposed to face the rotor. The retarder rotor has a magnetic member continuously in the circumferential direction. The retarder rotor is disposed to face the other ends of the teeth of the stator and configured to rotate integrally with the rotor. A rotor-to-stator pole piece portion having pole pieces at regular intervals in the circumferential direction is disposed between the rotor and the stator. A stator-to-retarder rotor pole piece portion having pole pieces at regular intervals in the circumferential direction is disposed between the stator and the retarder rotor. Both pole piece portions are moved in the circumferential direction to switch between an operation as a motor or generator and an operation as a retarder.Type: GrantFiled: March 31, 2021Date of Patent: August 2, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kenichiro Hayashi
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Patent number: 11394266Abstract: A two degree-of-freedom electromagnetic machine includes an inner stator, a plurality of stator windings, an outer stator, a voice coil winding, a rotor, a plurality of spin magnets, and a plurality of tilt magnets. The plurality of stator windings, when electrically energized, impart a torque on the rotor that causes the rotor to rotate, relative to the inner and outer stators, about a first rotational axis, and the voice coil winding, when electrically energized, imparts a torque on the rotor that causes the rotor to rotate, relative to the inner and outer stators, about a second rotational axis that is perpendicular to the first rotational axis.Type: GrantFiled: April 28, 2020Date of Patent: July 19, 2022Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Renukaprasad N, Deepak Mahajan, Govind Yadav, Subhashree Rajagopal
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Patent number: 11394277Abstract: An electric drive unit having an electric motor and an electronic control unit, wherein the electric motor has at least a number of first electrical terminals and the electronic control unit has a number of second electrical terminals, wherein an electrical connection is formed between in each case a first electrical terminal and a second electrical terminal in such a way that a first busbar is connected to the first electrical terminal, or said terminal is embodied as such, and a second busbar is connected to the second electrical terminal, or said terminal is embodied as such, wherein the first busbar is electrically connected to the second busbar by means of a flexible electrically conductive element or a cable.Type: GrantFiled: September 11, 2018Date of Patent: July 19, 2022Inventors: Jürgen Scholz, Thomas Schmid
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Patent number: 11390156Abstract: A modular hybrid transmission that provides for an improved support of the rotor as well as an improved cooling layout for the stator. The modular hybrid transmission has a rotating assembly and a housing assembly. The rotating assembly includes a rotor assembly, a rotor carrier hub that supports the rotor, and an input shaft. The rotor carrier is rotationally fixed on the input shaft. The housing assembly houses the rotating assembly, and includes a housing having an outer wall, a stator assembly connected to the outer wall, and a radially extending stationary wall that extends from the outer wall toward the output shaft. The stationary wall includes an axially extending wall portion that extends parallel to an outer surface of the input shaft, and a radial ball bearing supports the input shaft on this axially extending wall portion. Two stator cooling paths are channeled in the housing.Type: GrantFiled: May 27, 2020Date of Patent: July 19, 2022Assignee: Schaeffler Technologies AG & Co. KGInventors: Jacob G. Pfeifer, John Ramsey, Matthew A. Payne
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Patent number: 11394263Abstract: An electric coil device includes a winding support which is made of an elongated hollow tube that has the shape of a ring such that a higher-order loop of the winding device is formed entirely by the annular shape of the winding support, and a winding which is made of a superconductive conductor and is attached to the winding support. The superconductive conductor is wound in a helical manner about the hollow tube in a plurality of individual windings such that at least one higher-order winding of the entire helix is produced by the annular shape of the winding support. The interior of the hollow tube is designed as a coolant channel for circulating a fluid coolant. A rotor for an electric machine includes at least one such coil device.Type: GrantFiled: April 18, 2019Date of Patent: July 19, 2022Assignee: SIEMENS ENERGY GLOBAL GMBH & CO. KGInventor: Tabea Arndt
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Patent number: 11387710Abstract: A yokeless stator for an axial flux machine, comprising a housing, the housing comprising a circumferential portion and a plurality of elongated portions extending radially inwards therefrom, and a plurality of discrete stator teeth arranged within the circumferential portion, each discrete stator tooth comprising a ferromagnetic material and an electrical winding; the housing further comprising an electrically isolating filling material filling empty space inside the housing. The circumferential portion of the housing is made of a first non-ferromagnetic material and the elongated portions are made of a second non-ferromagnetic material. The housing comprises a laminated structure, which comprises at least part of the plurality of inwardly directed elongated portions.Type: GrantFiled: July 14, 2017Date of Patent: July 12, 2022Assignees: UNIVERSITEIT GENT, MAGNAX BVBAInventors: Hendrik Vansompel, Peter Sergeant, Peter Leijnen
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Patent number: 11387764Abstract: An electric motor may comprise a rotor and a stator. One or more first cables connected to a first power converter circuit of are wrapped adjacent to at least some stator teeth of a stator core to form at least a first portion of one or more coil windings. One or more second cables connected to a second power converter circuit of the plurality of power converter circuit also may be wrapped adjacent to at least some of the stator teeth to form at least a second portion of the one or more coil windings.Type: GrantFiled: July 12, 2018Date of Patent: July 12, 2022Assignee: Zunum Aero, Inc.Inventors: Waleed Said, Chenggang Mei
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Patent number: 11374477Abstract: A pulse generator comprises a mounting to hold two bodies in proximity to each other. Two magnetic elements may be movably placed in the mounting, and the magnetic elements will align with each other in one of two stable states. A coil surrounds the magnetic elements in the mounting, and a force application device applies a force to the first magnetic element to cause the first magnetic element to break the current alignment and thereby make the first and second magnetic elements realign to the other stable state. The movement of the magnets generates a pulse in the coil which may be detected by suitable circuitry and used. The device may be used inter alia to count rotations or linear movements, or to provide switching or remote control without the need for a separate power source.Type: GrantFiled: March 8, 2018Date of Patent: June 28, 2022Assignee: Servosense (SMC) Ltd.Inventors: Yves Villaret, Alex Matskin, Nadav Reinberg
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Patent number: 11368057Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back to one side in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis. Each of the electromagnetic steel sheets includes a caulking dowel portion to which the adjacent electromagnetic steel sheets are connected by press-fitting. The caulking dowel portion includes a protrusion protruding from the core back to another side in the radial direction.Type: GrantFiled: September 20, 2019Date of Patent: June 21, 2022Assignee: NIDEC SERVO CORPORATIONInventors: Norihisa Imaizumi, Tsuyoshi Nakagawa